The engagement of young Australians with school and individual and school-level influences on student engagement (defined as participation in extracurricular activities) were examined by analyzing data from the Longitudinal Surveys of Australian Youth. Being female, being from a higher socioeconomic background, and having professional parents were the individual-level factors associated with the highest levels of engagement with school. Students from independent schools had higher levels of engagement than did those in Catholic schools, who were more engaged than those in government schools. Students who planned on enrolling in tertiary study were more highly engaged than those who planned to leave school and go to work, and students at single-sex schools were more highly engaged than those at coeducational schools. Levels of engagement were higher where students believed that their school had a good school climate. Between-school differences accounted for almost 9% of the variation in students' engagement levels, thus indicating that what school a student attends does matter. School administrators can influence student engagement by providing extracurricular activities and encouraging (or expecting) student participation. The following items are appended: descriptions of the samples and populations; descriptions of the individual-level variables; the factor score regression weights; the constructed student and school-level measures; and multilevel models. (Contains 17 tables and 36 references.) (MN)